15848543881 has 15 divisors (see below), whose sum is σ = 16502796365. Its totient is φ = 15220221900.

The previous prime is 15848543869. The next prime is 15848543897. The reversal of 15848543881 is 18834584851.

The square root of 15848543881 is 125891.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 15848543881 - 2¹¹ = 15848541833 is a prime.

It is a super-2 number, since 2×15848543881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15848543831) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 120981186 + ... + 120981316.

Almost surely, 2^15848543881 is an apocalyptic number.

15848543881 is the 125891-st square number.

15848543881 is the 62946-th centered octagonal number.

It is an amenable number.

15848543881 is a deficient number, since it is larger than the sum of its proper divisors (654252484).

15848543881 is an frugal number, since it uses more digits than its factorization.

15848543881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386 (or 162 counting only the distinct ones).

The product of its digits is 4915200, while the sum is 55.

The spelling of 15848543881 in words is "fifteen billion, eight hundred forty-eight million, five hundred forty-three thousand, eight hundred eighty-one".